Can anyone help please I’m in desperate need of someone help please and God bless

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.